Sand and gravel pump



J. POLLARD.

SAND AND GBAVEL PUMP. APPLICATION man APR.30,1919.

atented Sept. 16,

:mit:

A TTUH/l/EYS JESSE A. POLLABD, 0F OAKLAND, MISSISSIPI. g

snm AND envar. your. g i

Speeication of Letters Patent.

l Patented sept. 116, 1919.

Application. led April 30, 1919. Serial No. 293,894.

To all 'whom it may concern: l

Be it known that I, JESSE A.. POLLARD, a citizen of the United States,and a resident of Oakland, in the county of Yalobusha and State ofMississippi, have invented a new and Improved Sand and Gravel Pump, ofwhich the followingv is a full, clear, and exact description.

This invention relates to sand and gravel pumping apparatus and has foran object, the provision of an improved construction wherein air isutilized in removing sand and gravel from a well.

Another object of the invention is tn pro vide a pumping apparatus inwhich sand and gravel may be removed from a bed beneath the surface ofthe earth in connection with the water contained therein by the use ofintermittent blasts of air into the sand and gravel at the proper point.A further object more specifically, is the provision of means forremoving sand and gravel from any desired depth below the surface of theearth through the use of a casing'open or perforated at the bottom andair supply and gravel discharging pipes extend to near the bottom of thecasing, the arrangement being such that as the avel enters the casing itis taken up and forced through the gravel pipe to a convenient point onthe surface.

In the accompanying drawing:

Figure l is a sectional view through'a casing and associate partsdisclosing an elnbodinient of the invention.

Fig. 2 is a transverse section throughlig.l 1 on line 2-2, the samebeing on an enlarged scale.

Referring to the accompanying drawings by numerals 1 indicates thesurface of the earth and 2 a casing sunk to the desired depth so thatthe lower end will be embedded. in the bed or strata 3 of sand and avel.Preferably the lower end is embedded in the sand. or gravel 3 thoughthis is not -always necessary. It is, however, necessary to have someopening at bottom of the casing 2, preferably the bottom of casing 2being open completely and also the bottom part of the casing providedlwith a number .of apertures 4. Arranged in the casing 2 1s a sand andgravel discharge pipe 5 which extends to near the bottom of casing 2 andto a point above the top where it and gravel or near the is connectedby` suitable conneetions to a discharge pipe 6, lsaid connection beingpreferably a swivel joint -or connection so that pipe 6 may beswung-"around to different places, so that the pipe 7 of sand may bedistributed easily` dam or embankment 8 is provided-near the casing 2and surrounds the casing, there being a gate 9 adjacent the casing andconnected with certain parts of the embankment so that -nov water canflow into-the casing 2 unless the gate 9 is opened.

During the normal operation of the pump `sand and gravel together with asuppl7 of the water will be discharged on to pile 7 an water wouldnaturally form a pond 7210,

which would ordinarily flow back yinto the casing 2 except for the gate9. This arrangement is provided in order that the supply of water maybe' had whenever desired, as sometimes the natural 'inflow'f of waterinto the bottom part of casing 2 is not suilicient to take care of thepumping operation. Associated with the sand and gravel pipe 5 is an airpipe 11, which is connected to pipe 5 at 12, which is near the bottom ofthe pipe. A level 13 of water is provided in the casing 2, said levelbeing of suiiicient height to provide a proper resistance to the actionof the air entering pipe 5, at point 12. The upper end of pipe 11 isconnected with pipe 14 which in turn is connected to any suitable sourceof air supply, which is preferably discharged into the pipe 11 andtherefrom in intermittent blasts as indicated by the air bubbles 15.Normally the sand bed 3 is saturated with water so that when the casing2 and pipe 5 are irst forced into the bed said casing and pipe will bepartially filled with gravel and sand as weil as water, of air entersthe pipe 5 at point 12 a certain quantity of sand, gravel and water willbe raised a predetermined distance. If the air is then turned off moresand and gravel will so that as soon as the first bla s take itsv placeunder the action of gravity so that a second blast of air will lift thecolumn a little farther and so on until eventually there is a continuousdischarge through pipe 6. In case of a continuous discharge of sand andgravel into pipe 5 and force the same out throu hj discharge pipe'G. Ifthis action shoul result in lowering the water leve?. 13 too far gate 9is opened-somewhat sc tc air the suction created thereby if! will* drawthe water and loose allow some ofthe surface Water'in the pond v to flowinto the casing and thereby make -up for the vlack could be 4rais ad butis especially adapted to be used in connection with a sand and gravelbed beneath the overflow district of the Mississippi river.

'.'This overflow district in times lpast was covered by' the ocean, but-is now covered by earth so that the original ocean bed and sandy shoresare buried beneath tillable earth. In order to get at the sand in adirect manner the casing is sunk in any desired manner and then thepumping outit supplied, which will lift the sand and gravel at a maximumspeed with a minimum expense. As the wells are never very 'deep thecasing may be pulled up and moved from time totime as desired. A

What I claim is:

1. A -s'and and gra' 'eli pumping outfit. adapted to be sunk intocomprising a casing the earth until the lower end thereof is projectinginto the sand and gravel bed, said lower end being open, a sand ,pipe4open at the lower end positioned in the casing, means for maintaining acertain Water level in said casing, an air pipe extending through theupper .part of the casing to near the bottom of said casing, said airpipe being connected with the sandA and gravel ypipe near the bottom ofthe sand and gravel pipe, a swinging discharge pipe connected with theupper end of said pipe, mean-s acting as a container for receiving Waterand .sand from, said. discharge pipe, guiding the Water to saidv casing,and a gate for'controlling the Water as it passes into said casing fromsaid container.

2. A sand and gravel pumping apparatus comprising a casing adapted toextend into a sand bed, la sand and gravel pipe extending through thecasing thereof, said casing and said pipe both being open at the bottom,anair pipe connected to said sand and gravel'pipe near the bottomthereof, a discharge Apipe connected with the upper edge of saidl sandand gravel pipean embankment'surrounding the dis? end of the dischargepipe, and means4 charge including a gate'for vregulating the H ow ofWater into said casing from Withln sald embankment. v

JESSE A. POLLARD.

to near the bottom-

